Machine for drying grain



(No Model.)

B. H. SAWIN.

MAGHINL FOR DRYING GRAIN, &c.

No. 299,683. Patented June 3, 1884.

' lTE STATES a'rnnr FFICEQ.

MACHINE FOR DRYING GRAIN, 84C.

SPECIFICATION forming part of Letters Patent No. 299,683, dated June 3,1884.

Application filed December 15, 1882.

To ctZZ whom it mag concern:

Be it known that I, EDWARD H. SAWIN, a citizen of the United States,residing at Gardner, in the county of Worcester and State ofMassachusetts, have invented a new and useful Machine for Drying,Cooling, or Cleaning Grain, Sugar, and other Similar Products, of whichthe following is-a specification.

The object of my invention is to dry, cool, or clean grain, sugar, andother similar products by passing them repeatedly through hot or coldair, used separately or in connection; and I attain this object by themechanism illustrated in the accompanying drawings, in which- Figure 1represents a detailed view of the entire machine. Fig. 2 is an end Viewof an airbox having an irregular upper surface. Fig. 3 is a view of themechanism which may be used for the adjustment of the air-box, and alsoshows the partition. Fig. 4 is an end view of air-box having a convexupper surface.

Similar letters refer to similar parts in these several views.

A A A A represent a cylinder made by the flat rings H H, joined by thestraight pieces N N, which are fastened to'the inside of said rings, andmade of any suitable material and placed at any desired distance apart.The spaces between the pieces N N are covered with wire-netting, oranysuitable material more or less perforated, the perforations beinglarge enough to permit the escape of air, but not so large as to letthrough the material being treated.

F F are rolls or trucks between and upon which the cylinder revolves,similar rolls or trucks being placed opposite F F.

K are shelves, made of any suitable material and shape, placed on theinside of the cylinder,

and running lengthwise through the cylinder,

and supported by the pieces N N.

R is an air-box, the upper surface of which is more or less perforated,and is fiat, as in Fig. 1, (represented by the lines B B B B,) orcurved, as in Fig. 4, or, as in Fig. 2, is broken, as represented by thelines a a, and wholly or partly perforated.

D is the shaft, supported by the hooked plate f upon the post b,whichholds the box in place,

the other end of the box being held by asimisired.

lar shaft and hooked plate, ,6, upon the post d, the plate e beingslotted at the lower end, so

that by loosening the bolts h it can by screw,

or lever be moved up or down, and by so doing raise or lower that end ofthe air-box R.

G is the opening through which air passes into the box R, and a similaropening is also at the other end of the box.

In operating my machine, the box R can be turned by the lever G, so asto make the angle of the upper surface, B B, any that may be desired,and by raising or lowering the end of the box supported by shaft D theangle of the side B B may be inclined as desired. I do not, however,confine myself to this particular mechanism for adjusting the box R. Thebox B does not turn with the cylinder A A A A, and is only moved tochange the angle or inclination of the upper surface as may be de- If asufficient inclination cannot be given by raising or lowering that endof the box supported by the shaft D, then one end of the entire machinecan be raised or lowered.

If different kinds of air are used at the same time, the box R can bedivided by partition, as desired, asshown in Fig. 3 by the dotted linesa a a.

The manner of operating my machine is as follows: The material to betreated enters the upperend of the cylinder A A, as at I. The cylinder,revolving on trucks F F by means of any suitable mechanism, carries thematerial upon the shelves K until it reaches the point above G, when itis spilled upon the inclined upper surface, B B, of the air-box R. Thematerial, in-passing over the upper surface, B B, passes throughair-cold, warm, or artificially driedintroduced at O, and also, ifdesired, at the end opposite G, to the inside of the air-box, and whichpasses through the perforations in the upper surface of the air-box. Theair, after it passes through the box, escapes from the cylinder, at theends, or through the spaces between the pieces .N N, if perforated. Oneend of the air-box It being lower than the other, the material treateddoes not pass straight across the upper surface, B B, but diagonally, asshown by the dotted lines G G. Therefore, as it drops from the loweredge, as at G, upon the shelves K, it is again carried around by therevolution of the cylinder and (No model.) I

again spilled upon the surface of the air-box at apoint each timefarther removed from the upper end of the machine until it drops out ofthe machine at the lower end. By making the angle of the side B Bgreater or less, the material passes over the upper surface of theair-box faster or slower, and by changing the elevation of the endsupported by the shaft D greater or less time is taken for the materialto pass through the machine.

Having described my invention and its operation, what I desire to claimand secure by Letters Patent is 1. An airboX, as B, adjustable sidewiseand endwisc in relation to the cylinder A A at any desired angle, andhaving the perforated surface B B B B-, substantially as described,

and for the purposes specified.

2. An air-box, as R, adjustable sidewise and eudwise in relation to thecylinder A A at any desired angle, with the upper surface, B B B B,broken, as at cm, more or less perforated, substantially as described,and for the purposes specified.

3. A revolving cylinder, as A A, in combi- 2 5 nation with an adjustableair-box, as B, substantially as described.

4. The cylinder A A.,'with the shelves K, rings H H, and trucks F F, incombination with the air-box B, inlet 0, and also at the end opposite O,and the perforated surface B B B B, adjusted with a partition for theuse of different kinds of air at the same time, substantially asdescribed, and for the purposes specified.

5. The cylinder A A, rings H H, trucks F 3 F, shelves K, and theperforated spaces between the straight pieces N N, in combination withthe air-box B, surface B B B B, shaft D, support f, inlet 0, and also atthe end opposite O, and the mechanism whereby the end supported by theshaft D is raised or lowered, substantially as described.

EDWARD H. snWIN.

\Vitnesses:

A. H. \VASHBURN, HENRY L. XVAsnnURN.

